The shade number of a welding lens indicates the level of darkness provided to protect your eyes from the brightness of the welding arc. Regarding MIG (Metal Inert Gas) welding, the shade number you should use depends on the amperage and material thickness you are working with.
As a general guideline, the following shade numbers are recommended for MIG welding:
- For lower amperages (under 100 amps): Shade #10 is usually sufficient.
- For amperages between 100 to 200 amps: Shade #10 to #12 is recommended.
- For higher amperages (over 200 amps): Shade #12 to #13 are recommended.
Personal preference and sensitivity to light can play a role in selecting the appropriate shade. Some welders prefer a slightly darker or lighter shade than recommended based on comfort and visibility.
Always ensure you’re comfortable with the shade and that it provides adequate eye protection.
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